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BC857A Specifications

Detailed technical information and Application Scenarios

Product Details

PartNumberManufactorQuantityAvailability
BC857ACJ15000Yes

SMD Small Signal Transistor PNP Low Noise

The BC857A is a general-purpose PNP transistor manufactured by CJ (Changjiang Electronics Tech Co., Ltd.). Below are its key specifications, descriptions, and features:

Specifications:

  • Transistor Type: PNP
  • Maximum Collector-Base Voltage (VCB): -50V
  • Maximum Collector-Emitter Voltage (VCE): -45V
  • Maximum Emitter-Base Voltage (VEB): -5V
  • Continuous Collector Current (IC): -100mA
  • Total Power Dissipation (Ptot): 250mW
  • DC Current Gain (hFE): 110 - 800 (at IC = -2mA, VCE = -5V)
  • Transition Frequency (fT): 100MHz (typical)
  • Operating Temperature Range: -55°C to +150°C

Descriptions:

  • The BC857A is a small-signal PNP transistor in a SOT-23 surface-mount package.
  • It is designed for general-purpose amplification and switching applications.
  • Suitable for low-power circuits in consumer electronics, telecommunication devices, and industrial control systems.

Features:

  • Low Noise: Optimized for audio and signal processing applications.
  • High Current Gain: Provides efficient amplification in small-signal circuits.
  • Compact SMD Package: SOT-23 form factor for space-constrained designs.
  • Complementary Pair: Works well with NPN transistors like the BC847A for push-pull configurations.

For detailed electrical characteristics, refer to the official CJ datasheet.

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